9=3r-9

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Solution for 9=3r-9 equation:


Simplifying
9 = 3r + -9

Reorder the terms:
9 = -9 + 3r

Solving
9 = -9 + 3r

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-3r' to each side of the equation.
9 + -3r = -9 + 3r + -3r

Combine like terms: 3r + -3r = 0
9 + -3r = -9 + 0
9 + -3r = -9

Add '-9' to each side of the equation.
9 + -9 + -3r = -9 + -9

Combine like terms: 9 + -9 = 0
0 + -3r = -9 + -9
-3r = -9 + -9

Combine like terms: -9 + -9 = -18
-3r = -18

Divide each side by '-3'.
r = 6

Simplifying
r = 6

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